Activity: 2011 Japanese Tsunami Propagation
this is the only information I was given for this homework sheet
Each of the following Stations is a DART Monitoring Station that records the time a tsunami moves past it. The red star in Japan is the epicenter of the 2011 Honshu Earthquake. Use the following data to DRAW the approximate location of the 2011 tsunami wave front after 5, 10, and 15 hours on the provided map, below. Station Station Arrival Time Elapsed Time 8.50 21413 1430 4.25 6.25 21415 21416 21418 21419 32411 32412 43412 43413 46402 46403 46404 Arrival Time Elapsed Time 0700 1 hour 0845 2.75 0800 2.00 0630 0.50 0700 1.00 2230 16.50 0030 18.50 1900 13.00 2030 14.50 1045 4.75 1130 5.50 1430 8.50 46407 46408 46409 46410 46411 51406 51425 52402 52403 52405 52406 54401 1015 1215 1300 1500 1900 1230 0930 1030 0930 1200 1700 7.00 9.00 13.00 6.50 3.50 4.50 3.50 6.00 11.00 140E 160E 180 160W 140W 120W 100W 80W AMC Circle 46409 46410 N.09 21415 46403 21414 46408 46402 021416 21419 46404 O 464070 464110 Chicago 40N 21418 Osaka Los Angeles 21413 464120 51407 20N Mexico City 43412 434130 52405 52402 O 52403 324110 Equator 52406 51425 51406 O 324120 20S Pacific Ocean 54401 o 40S 0 1.000 2,000 4,000 Miles 1. Use your map you sketched to estimate how many hours it took for the tsunami to arrive at: Amchitka, Alaska (station 21414) Hawaii (station 51407) Los Angeles 2. How far (in miles) did the tsunami travel from its source near Japan to Los Angeles? 3. How long (in hours) did it take for the tsunami to travel from Japan to Los Angeles? 4. Given the total distance and total travel time from the two above questions, estimate the speed of the tsunami in miles per hour? (Please show your work) 5. Does this method of calculating the average speed of the tsunami provide a good approximation of the actual speed of the wave at any given point? Why or why not? 6. Debris from the 2011 Tsunami did not begin to wash ashore on North American beaches until late 2012. Why did it take so much longer for the debris to arrive than the wave? Each of the following Stations is a DART Monitoring Station that records the time a tsunami moves past it. The red star in Japan is the epicenter of the 2011 Honshu Earthquake. Use the following data to DRAW the approximate location of the 2011 tsunami wave front after 5, 10, and 15 hours on the provided map, below. Station Station Arrival Time Elapsed Time 8.50 21413 1430 4.25 6.25 21415 21416 21418 21419 32411 32412 43412 43413 46402 46403 46404 Arrival Time Elapsed Time 0700 1 hour 0845 2.75 0800 2.00 0630 0.50 0700 1.00 2230 16.50 0030 18.50 1900 13.00 2030 14.50 1045 4.75 1130 5.50 1430 8.50 46407 46408 46409 46410 46411 51406 51425 52402 52403 52405 52406 54401 1015 1215 1300 1500 1900 1230 0930 1030 0930 1200 1700 7.00 9.00 13.00 6.50 3.50 4.50 3.50 6.00 11.00 140E 160E 180 160W 140W 120W 100W 80W AMC Circle 46409 46410 N.09 21415 46403 21414 46408 46402 021416 21419 46404 O 464070 464110 Chicago 40N 21418 Osaka Los Angeles 21413 464120 51407 20N Mexico City 43412 434130 52405 52402 O 52403 324110 Equator 52406 51425 51406 O 324120 20S Pacific Ocean 54401 o 40S 0 1.000 2,000 4,000 Miles 1. Use your map you sketched to estimate how many hours it took for the tsunami to arrive at: Amchitka, Alaska (station 21414) Hawaii (station 51407) Los Angeles 2. How far (in miles) did the tsunami travel from its source near Japan to Los Angeles? 3. How long (in hours) did it take for the tsunami to travel from Japan to Los Angeles? 4. Given the total distance and total travel time from the two above questions, estimate the speed of the tsunami in miles per hour? (Please show your work) 5. Does this method of calculating the average speed of the tsunami provide a good approximation of the actual speed of the wave at any given point? Why or why not? 6. Debris from the 2011 Tsunami did not begin to wash ashore on North American beaches until late 2012. Why did it take so much longer for the debris to arrive than the wave
